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Transistors

How BJTs Work

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Let’s go into more detail on how the BJT (bipolar junction transistor) works.

The last article on transistors (An Introduction to Transistors) started with a little history on the devices and what was in use before them. Then, it glossed over the two main types you’ll work with: BJTs and MOSFETs. Finally, the two modes of transistor operation were briefly discussed.

This time, we’re going to take a deeper dive into BJTs specifically. This article will go into a bit more detail on how the BJT or bipolar junction transistor works and some basics on using them in your creations.

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An Introduction to Transistors

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When someone poses the question what is a transistor or how does a transistor work they can literally find tons of material that answers those questions and gives more detail than perhaps one would care for.

Indeed, many books exist on the subject of transistors, semiconductor physics, transistor characteristics, and their operation. They range from the beginner level to the engineering level and even on to cutting edge research and new breakthroughs in the design of transistors and semiconductors.

Because of this, the answers you will find to the questions above (and similar ones) range from the simplistic to the extremely complicated.

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